Telescope: NASA IRTF, Mauna Kea Instrument: SpeX (Imager) Date: 2005 July 17 UT Conditions: Scattered cirrus, humidity 15-58%, 0.8" seeing, winds E 10-29 mph File Object UT Date UT Time Airmass Filter Itime Coadds PosAngle Slit Start Finish (sec) (deg) g20050717_0002_dflat.fit Dome Flat 2005-07-17 04:43:47 04:45:10 1.597 H 20.00 3 0.00 Mirror g20050717_0003_dflat.fit Dome Flat 2005-07-17 04:45:42 04:47:06 1.597 J 20.00 3 0.00 Mirror g20050717_0004_dflat.fit Dome Flat 2005-07-17 04:48:23 04:49:47 1.597 K 20.00 3 0.00 Mirror g20050717_0005_dflat.fit Dome Flat 2005-07-17 04:50:31 04:51:54 1.597 K 20.00 3 0.00 Mirror g20050717_0006_dflat.fit Dome Flat 2005-07-17 04:54:39 04:56:03 1.597 J 20.00 3 0.00 Mirror g20050717_0007_dflat.fit Dome Flat 2005-07-17 04:57:10 04:58:34 1.597 H 20.00 3 0.00 Mirror g20050717_0008_dark.fit Dark 2005-07-17 04:59:40 05:01:03 1.597 Blank 20.00 3 0.00 Mirror g20050717_0009_a.fit HD 116960 2005-07-17 05:30:36 05:30:39 1.073 K 0.25 5 0.00 Mirror g20050717_0010_a.fit HD 116960 2005-07-17 05:30:45 05:30:48 1.073 K 0.25 5 0.00 Mirror g20050717_0011_a.fit HD 116960 2005-07-17 05:30:54 05:30:57 1.073 K 0.25 5 0.00 Mirror g20050717_0012_a.fit HD 116960 2005-07-17 05:31:03 05:31:06 1.074 K 0.25 5 0.00 Mirror g20050717_0013_a.fit HD 116960 2005-07-17 05:31:13 05:31:16 1.074 K 0.25 5 0.00 Mirror g20050717_0014_a.fit HD 116960 2005-07-17 05:31:22 05:31:25 1.074 K 0.25 5 0.00 Mirror g20050717_0015_a.fit HD 116960 2005-07-17 05:31:31 05:31:34 1.074 K 0.25 5 0.00 Mirror g20050717_0016_a.fit HD 116960 2005-07-17 05:34:18 05:34:21 1.079 J 0.25 5 0.00 Mirror g20050717_0017_a.fit HD 116960 2005-07-17 05:36:38 05:36:41 1.083 J 0.25 5 0.00 Mirror g20050717_0018_a.fit HD 116960 2005-07-17 05:36:47 05:36:50 1.083 J 0.25 5 0.00 Mirror g20050717_0019_a.fit HD 116960 2005-07-17 05:36:56 05:36:59 1.084 J 0.25 5 0.00 Mirror g20050717_0020_a.fit HD 116960 2005-07-17 05:37:06 05:37:09 1.084 J 0.25 5 0.00 Mirror g20050717_0021_a.fit HD 116960 2005-07-17 05:59:15 05:59:18 1.130 H 0.25 5 0.00 Mirror g20050717_0022_a.fit HD 116960 2005-07-17 05:59:47 05:59:50 1.131 H 0.25 5 0.00 Mirror g20050717_0023_b.fit HD 116960 2005-07-17 05:59:53 05:59:56 1.131 H 0.25 5 0.00 Mirror g20050717_0024_a.fit HD 116960 2005-07-17 06:00:05 06:00:08 1.132 H 0.25 5 0.00 Mirror g20050717_0025_b.fit HD 116960 2005-07-17 06:00:10 06:00:13 1.132 H 0.25 5 0.00 Mirror g20050717_0026_a.fit HD 116960 2005-07-17 06:00:22 06:00:25 1.132 H 0.25 5 0.00 Mirror g20050717_0027_b.fit HD 116960 2005-07-17 06:00:27 06:00:30 1.133 H 0.25 5 0.00 Mirror g20050717_0028_a.fit HD 116960 2005-07-17 06:00:39 06:00:42 1.133 H 0.25 5 0.00 Mirror g20050717_0029_b.fit HD 116960 2005-07-17 06:00:45 06:00:47 1.133 H 0.25 5 0.00 Mirror g20050717_0030_a.fit HD 116960 2005-07-17 06:00:57 06:00:60 1.134 H 0.25 5 0.00 Mirror g20050717_0031_b.fit HD 116960 2005-07-17 06:01:02 06:01:05 1.134 H 0.25 5 0.00 Mirror g20050717_0032_a.fit HD 116960 2005-07-17 06:01:15 06:01:18 1.135 H 0.25 5 0.00 Mirror g20050717_0033_b.fit HD 116960 2005-07-17 06:01:20 06:01:23 1.135 H 0.25 5 0.00 Mirror g20050717_0034_a.fit HD 116960 2005-07-17 06:01:32 06:01:35 1.135 H 0.25 5 0.00 Mirror g20050717_0035_b.fit HD 116960 2005-07-17 06:01:37 06:01:40 1.136 H 0.25 5 0.00 Mirror g20050717_0036_a.fit 9P/Tempel 1 2005-07-17 06:10:18 06:11:11 1.313 H 45.00 1 0.00 Mirror g20050717_0037_a.fit 9P/Tempel 1 2005-07-17 06:11:58 06:12:51 1.317 H 45.00 1 0.00 Mirror g20050717_0038_b.fit 9P/Tempel 1 2005-07-17 06:12:54 06:13:47 1.320 H 45.00 1 0.00 Mirror g20050717_0039_a.fit 9P/Tempel 1 2005-07-17 06:13:55 06:14:49 1.322 H 45.00 1 0.00 Mirror g20050717_0040_b.fit 9P/Tempel 1 2005-07-17 06:14:51 06:15:44 1.325 H 45.00 1 0.00 Mirror g20050717_0041_a.fit 9P/Tempel 1 2005-07-17 06:15:53 06:16:46 1.327 H 45.00 1 0.00 Mirror g20050717_0042_b.fit 9P/Tempel 1 2005-07-17 06:16:48 06:17:41 1.330 H 45.00 1 0.00 Mirror g20050717_0043_a.fit 9P/Tempel 1 2005-07-17 06:17:50 06:18:43 1.333 H 45.00 1 0.00 Mirror g20050717_0044_b.fit 9P/Tempel 1 2005-07-17 06:18:45 06:19:38 1.336 H 45.00 1 0.00 Mirror g20050717_0045_a.fit 9P/Tempel 1 2005-07-17 06:19:48 06:20:41 1.338 H 45.00 1 0.00 Mirror g20050717_0046_b.fit 9P/Tempel 1 2005-07-17 06:20:45 06:21:38 1.342 H 45.00 1 0.00 Mirror g20050717_0047_a.fit 9P/Tempel 1 2005-07-17 06:21:47 06:22:40 1.344 H 45.00 1 0.00 Mirror g20050717_0048_b.fit 9P/Tempel 1 2005-07-17 06:22:42 06:23:36 1.347 H 45.00 1 0.00 Mirror g20050717_0049_a.fit 9P/Tempel 1 2005-07-17 06:23:44 06:24:37 1.350 H 45.00 1 0.00 Mirror g20050717_0050_b.fit 9P/Tempel 1 2005-07-17 06:24:39 06:25:33 1.353 H 45.00 1 0.00 Mirror g20050717_0051_a.fit 9P/Tempel 1 2005-07-17 06:26:27 06:27:20 1.359 K 45.00 1 0.00 Mirror g20050717_0052_b.fit 9P/Tempel 1 2005-07-17 06:27:23 06:28:16 1.362 K 45.00 1 0.00 Mirror g20050717_0053_a.fit 9P/Tempel 1 2005-07-17 06:30:19 06:31:57 1.374 K 90.00 1 0.00 Mirror g20050717_0054_b.fit 9P/Tempel 1 2005-07-17 06:32:00 06:33:38 1.380 K 90.00 1 0.00 Mirror g20050717_0055_a.fit 9P/Tempel 1 2005-07-17 06:33:46 06:35:25 1.386 K 90.00 1 0.00 Mirror g20050717_0056_b.fit 9P/Tempel 1 2005-07-17 06:39:07 06:40:45 1.406 K 90.00 1 0.00 Mirror g20050717_0057_a.fit 9P/Tempel 1 2005-07-17 06:44:35 06:46:13 1.427 K 90.00 1 0.00 Mirror g20050717_0058_b.fit 9P/Tempel 1 2005-07-17 06:49:55 06:51:33 1.450 K 90.00 1 0.00 Mirror g20050717_0059_a.fit 9P/Tempel 1 2005-07-17 06:55:24 06:57:02 1.474 K 90.00 1 0.00 Mirror g20050717_0060_b.fit 9P/Tempel 1 2005-07-17 07:00:44 07:02:22 1.501 K 90.00 1 0.00 Mirror g20050717_0061_a.fit HD 116960 2005-07-17 07:12:48 07:12:51 1.413 K 0.25 5 0.00 Mirror g20050717_0062_b.fit HD 116960 2005-07-17 07:16:33 07:16:36 1.435 K 0.25 5 0.00 Mirror g20050717_0063_sflat.fit Sky Flat 2005-07-17 07:23:26 07:23:29 1.479 K 0.25 5 0.00 Mirror g20050717_0064_a.fit HD 116960 2005-07-17 07:23:57 07:23:60 1.482 K 0.25 5 0.00 Mirror g20050717_0065_a.fit HD 116960 2005-07-17 07:24:58 07:25:01 1.489 K 0.25 5 0.00 Mirror g20050717_0066_b.fit HD 116960 2005-07-17 07:25:04 07:25:07 1.489 K 0.25 5 0.00 Mirror g20050717_0067_a.fit HD 116960 2005-07-17 07:25:15 07:25:18 1.490 K 0.25 5 0.00 Mirror g20050717_0068_b.fit HD 116960 2005-07-17 07:25:20 07:25:23 1.492 K 0.25 5 0.00 Mirror g20050717_0069_a.fit HD 116960 2005-07-17 07:25:33 07:25:36 1.493 K 0.25 5 0.00 Mirror g20050717_0070_b.fit HD 116960 2005-07-17 07:25:38 07:25:41 1.493 K 0.25 5 0.00 Mirror g20050717_0071_a.fit HD 116960 2005-07-17 07:25:50 07:25:53 1.495 K 0.25 5 0.00 Mirror g20050717_0072_b.fit HD 116960 2005-07-17 07:25:55 07:25:58 1.495 K 0.25 5 0.00 Mirror g20050717_0073_a.fit HD 116960 2005-07-17 07:26:08 07:26:10 1.496 K 0.25 5 0.00 Mirror g20050717_0074_b.fit HD 116960 2005-07-17 07:26:13 07:26:16 1.498 K 0.25 5 0.00 Mirror g20050717_0075_a.fit HD 116960 2005-07-17 07:26:25 07:26:28 1.499 K 0.25 5 0.00 Mirror g20050717_0076_b.fit HD 116960 2005-07-17 07:26:30 07:26:33 1.499 K 0.25 5 0.00 Mirror g20050717_0077_a.fit HD 116960 2005-07-17 07:26:42 07:26:45 1.501 K 0.25 5 0.00 Mirror g20050717_0078_b.fit HD 116960 2005-07-17 07:26:48 07:26:51 1.501 K 0.25 5 0.00 Mirror g20050717_0082_a.fit HD 116960 2005-07-17 07:28:40 07:28:43 1.514 K 0.25 5 0.00 Mirror g20050717_0083_b.fit HD 116960 2005-07-17 07:28:45 07:28:48 1.516 K 0.25 5 0.00 Mirror Optical depth at 225 GHz measured at the Caltech Submillimeter Observatory (CSO) on Mauna Kea as function of time (UT) on 2005 Jul 17. (Precipitable water vapor above the summit of Mauna Kea can be approximated by pwv (mm) ~ 20 * Tau (225 GHz), ie: for Tau (225 Ghz) ~ 0.10, pwv ~ 2 mm). UT Tau (225 GHz) 05:24 0.092 05:34 0.129 05:43 0.102 05:54 0.102 06:04 0.096 06:13 0.096 06:24 0.103 06:34 0.103 06:43 0.102 06:54 0.099 07:04 0.1 07:13 0.095 07:24 0.092